{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"CompoundCRS","name":"S-JTSK/05 / Modified Krovak East North + Baltic 1957 height","components":[{"type":"ProjectedCRS","name":"S-JTSK/05 / Modified Krovak East North","base_crs":{"type":"GeographicCRS","name":"S-JTSK/05","datum":{"type":"GeodeticReferenceFrame","name":"System of the Unified Trigonometrical Cadastral Network/05","ellipsoid":{"name":"Bessel 1841","semi_major_axis":6377397.155,"inverse_flattening":299.1528128}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"id":{"authority":"EPSG","code":5228},"remarks":"Derived through projCRS 5515 to improve the scale and homogeneity of CRS 4156 within Czechia as a scientific working system, but CRS 4156 remains the legal system. See CRS code 5229 for Ferro-referenced alternative."},"conversion":{"name":"Modified Krovak East North (Greenwich)","method":{"name":"Krovak Modified (North Orientated)","id":{"authority":"EPSG","code":1043}},"parameters":[{"name":"Latitude of projection centre","value":49.5,"unit":"degree","id":{"authority":"EPSG","code":8811}},{"name":"Longitude of origin","value":24.8333333333333,"unit":"degree","id":{"authority":"EPSG","code":8833}},{"name":"Co-latitude of cone axis","value":30.2881397222222,"unit":"degree","id":{"authority":"EPSG","code":1036}},{"name":"Latitude of pseudo standard parallel","value":78.5,"unit":"degree","id":{"authority":"EPSG","code":8818}},{"name":"Scale factor on pseudo standard parallel","value":0.9999,"unit":"unity","id":{"authority":"EPSG","code":8819}},{"name":"False easting","value":5000000,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":5000000,"unit":"metre","id":{"authority":"EPSG","code":8807}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Easting","abbreviation":"X","direction":"east","unit":"metre"},{"name":"Northing","abbreviation":"Y","direction":"north","unit":"metre"}]}},{"type":"VerticalCRS","name":"Baltic 1957 height","datum":{"type":"VerticalReferenceFrame","name":"Baltic 1957"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]}}],"scope":"GIS.","area":"Czechia.","bbox":{"south_latitude":48.58,"west_longitude":12.09,"north_latitude":51.06,"east_longitude":18.86},"id":{"authority":"PROJ","code":"S_JTSK05_E_N_BALTIC_HEIGHT"}}